For the most part of today the weather will remain warm though, with some areas reaching 20C.

But it will feel muggy as thunderstorms and heavy rain move eastwards to all areas.

(Image: Barcroft Media)

(Image: PA)

A yellow weather warning for rain has been issued by Met Eireann.

It's in place from 6am this morning until 9pm tonight and will affect the entire country.

A forecaster said: "Heavy showers or longer spells of rain with a high risk of thunder and localised flooding will bring rainfall accumulations of 20mm to 35mm to many areas."

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In a post on their website, Met Eireann said: "This morning, heavy rain or showers with thunder in Munster, Connacht and south Leinster will gradually spread eastwards to all areas, with a continuing risk of thunder and localised flooding.

"The rain will gradually clear northeastwards through the evening with highest temperatures of 17C to 20C with moderate southeast winds, later veering fresh westerly.

"Tonight will be manly dry with clear spells. There'll be some showers along the west coast and lowest temperatures of 8C to 10C.

(Image: Moment Open)

"Thursday will start off dry in the east. Showers in the west will spread eastwards through the morning and will become widespread by early afternoon.

"Some will be heavy or possibly thundery with highest temperatures of 14C to 17C.

"The next few days will be dominated by a low pressure system close to Ireland resulting in breezy conditions with showery rain and slightly cooler than in recent days."